Three-arm knob



1. Three-arm knob

1.1 is a bottom view of the threearm knob;

1.2 is a side view of the threearm knob;

1.3 is another side view of the threearm knob;

1.4 is a top view of the threearm knob;

1.5 is another side view of the threearm knob;

1.6 is a further side view of the threearm knob; and

1.7 is a perspective top view of the threearm knob. 

CLAIM The ornamental design for a three-arm knob, as shown and described. 